Piano-forte



No Mmm G. M. GUILD.

PIANOFORTE.

' 61 Patented Nov. 2, 1886. N0. 351,7

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Y D4 C. N PETERS. Pheluxlwgmpher, wanhmgmn `UNITED STATES PATENT OEFCE.

GEORGE MORSE GUILD, OF BOSTON, MASSACHUSETTS.

PIANO- FORTE.

SPECIFICATION forming part of Letters Patent No, 351,761, dated November 2, 1886.

Application tiled February 17, 1886, Serial No. 192,160. (No modeLl i T0 all whom, t may concern:

Be it known that I, GEORGE MoRsE GUILD, of Boston, in the county ot' Suffolk, of the Coinmonwealth of Massachusetts, have invented a ,new and useful Improvement in Piano-Fortes;

and I do hereby declare the same to be described in the following specification and represented in the accompanying drawing, which is a perspective view of part of the metallic stringt'rame ot' a piano-forte, together with Vparts of its strings and their bridge provided with my invention, the nature ot' which is defined in the claims hereinafter presented. The said iigure also shows part ot' the wooden frame to which the said string-frame is secured.

ln such drawing, A denotes a part of the metallic frame for sustaining the strings S, B being a metallic bridge over which the said strings pass to and through the agratfes O, and thence to the straiuingpins D.

Eis part ot' the wooden frame on which the iron frame A is fixed.

In practice it has been found when the bridge is integral with the metallic frame-that is, cast in one piece therewith, as is usually the custom-that the strings on being struck by the .hammers are productive ot' hard or met-allie tones. In order to prevent such I have the metallic bridge in a separate piece from the rest of the metallic frame, and interpose be tween the bridge and the said frame a yielding cushion of clotlnieather, vulcanized indiarubber, or other proper material, and I fasten the bridge to ythe frame by screws or other means, it' necessary, though the pressure of 35 lthe strings upon the bridge, vhowever,wi1l generally suffice to keep the bridge in place. In the drawing such cushion is shown at F. Vith it the metallic tones of the strings are overcome, and there results,when the strings are struck by the hammers, remarkably soft and pleasant tones.

l. The combination ofv the metallic stringframe and strings ot' a piano-forte, and the strainingpins and the metallic bridge of such strings, with a yielding cushion arranged on the said frame, between it andthe bridge, and having the bridge borne upon it (the said cushion) by the strings, all being substantially as set forth.

2. The combination of the metallic stringframe and strings of a piano-forte, and the straining-pins, agralfes, and metallic bridge of such strings, with a yielding cushion arranged on the said frame, between it and the bridge, and' having the latter borne upon it (the said cushion) by the strings, all being essentially as represented.

GEORGE MORSE GUILD.

Witnesses:

R. II. EDDY,

R. B. TORRES?. 

